【发布时间】：2014-03-10 02:16:33
【问题描述】：
//Registration filter
final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(databaseModel);
DocumentListener idListener = new DocumentListener() {
public void changedUpdate(DocumentEvent documentEvent) {
}
public void insertUpdate(DocumentEvent documentEvent) {
String searchText = txtReg.getText();
if (searchText.length() == 0) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(RowFilter.regexFilter(searchText));
}
numberOfRecords.setText(searchTable.getRowCount() + " records");
}
public void removeUpdate(DocumentEvent documentEvent) {
}
};
txtReg.getDocument().addDocumentListener(idListener);
我又来了，可能是一些愚蠢的问题... :( 我有一个 JTable，我希望在我在文本字段上键入时过滤掉。经过一番研究后，我想出了这个，但它不起作用！如果我将过滤器放在侦听器之外，并使用任意字符串作为搜索词，它就可以完美运行。我错过了什么？谢谢！
public class GUI extends JFrame {
private static final long serialVersionUID = -7968397937566078184L;
private static final JLabel numberOfRecords = new JLabel();
private static int numberOfRows;
private static DefaultTableModel databaseModel;
public GUI(DefaultTableModel database){
setDefaultLookAndFeelDecorated(true);
setLayout(new MigLayout());
databaseModel = database;
//Menus
JMenuBar menubar = new JMenuBar();
JMenu file = new JMenu("File");
JMenuItem update = new JMenuItem("Look for database updates");
JMenuItem settings = new JMenuItem("Settings");
JMenuItem exit = new JMenuItem("Exit");
menubar.add(file);
file.add(update);
file.add(settings);
file.add(exit);
setJMenuBar(menubar);
//Top section
JPanel searchSection = new JPanel();
searchSection.setLayout(new MigLayout("w 50mm!"));
final JTextField txtReg = new JTextField(10);
JLabel searchID = new JLabel("Current registration:");
JLabel lblManufacturer = new JLabel("Manufacturer");
JComboBox cmbManufacturer = new JComboBox();
JLabel lblType = new JLabel("Type");
JComboBox cmbType = new JComboBox();
//Build main window
searchSection.add(searchID);
searchSection.add(txtReg, "span 2");
searchSection.add(lblManufacturer);
searchSection.add(cmbManufacturer, "growx, span 2");
searchSection.add(lblType);
searchSection.add(cmbType,"growx, span 2");
//Table
final JTable searchTable = new JTable(databaseModel);
//Pack table, still have to figure this one out
int width = 0;
for (int row = 0; row < searchTable.getRowCount(); row++) {
TableCellRenderer renderer = searchTable.getCellRenderer(row, 2);
Component comp = searchTable.prepareRenderer(renderer, row, 2);
width = Math.max (comp.getPreferredSize().width, width);
}
searchTable.getColumn("Key").setMaxWidth(0);
searchTable.getColumn("Key").setMinWidth(0);
searchTable.setRowSelectionAllowed(true);
searchTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
searchTable.setAutoCreateRowSorter(true);
searchTable.getRowSorter().toggleSortOrder(1);
searchTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
numberOfRows=searchTable.getRowCount();
JScrollPane browserSP = new JScrollPane(searchTable);
browserSP.setBorder(BorderFactory.createEmptyBorder(0, 4, 4, 4));
setTitle("AirBase");
setSize(1300,700);
setMinimumSize(new Dimension(1250,650));
setExtendedState(JFrame.MAXIMIZED_BOTH);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
//TODO Fill manufacturer box
//Registration filter
//TODO Fix this!
final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(databaseModel);
DocumentListener idListener = new DocumentListener() {
public void changedUpdate(DocumentEvent documentEvent) {
}
public void insertUpdate(DocumentEvent documentEvent) {
String searchText = txtReg.getText();
if (searchText.length() == 0) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(RowFilter.regexFilter(searchText));
}
numberOfRecords.setText(searchTable.getRowCount() + " records");
}
public void removeUpdate(DocumentEvent documentEvent) {
}
};
txtReg.getDocument().addDocumentListener(idListener);
add(searchSection, "w 100%, h 5%, wrap");
add(browserSP,"w 100%, h 95%, wrap");
numberOfRecords.setFont(numberOfRecords.getFont().deriveFont(9.0f));
numberOfRecords.setText(numberOfRows + " RECORDS");
add(numberOfRecords, "alignx center");
}
}
【问题讨论】：
-
乍一看，您所拥有的一切都很好。您能否提供一个完整的可运行示例，其中包含表的硬编码值，以便我们对其进行测试。
-
@peeskillet 对问题进行了编辑，这就是您所追求的吗？ :( 我应该为我的代码感到羞耻吗？哈哈
-
有点，但您缺少表模型的数据。实际上，您缺少传递给框架的整个表格模型
-
我应该提到，表模型是在启动时从不应修改的数据库生成的。该表加载得很好，大约有 30k 个条目:)
-
这不是我所说的硬编码值。由于我们无法测试您的数据库代码，请为您的表模型创建一个完整的可运行/可编译示例，并使用一个
main方法，然后您就可以开始了。除此之外，我创建了一个虚拟 TableModel 并尝试运行您的程序并在启动时遇到一些异常。这就是为什么为我们创建一个可运行的示例很重要。
标签： java swing jtable jtextfield rowfilter